for my lan i just used 192.168.1.x 255.255.255.0
using windows this is the the I get 122.2.xxx.xxx 255.255.240.0
gateway 122.2.32.1
In relation to this It seems that I cannot manually change the IP using ifconfig for the IP for the Internet connection. I have to use console.
Modem-eth1-sme-eth0-swtich-2 xp workstations